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Loping idle + stumbling?

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    Loping idle + stumbling?

    Ok guys so we finished the head gasket job and also resurfaced an e36 head and did a valve job on it and installed that head. Everything's back together now but I noticed a few things.

    First of all, the car has a 'loping' idle. It seems to stay in the same place more or less but it sounds like it's going up and down, kind of like an old car would sound like (like a 302, but not that bad).

    Also, sometimes the car will start to stumble and idle really low, often when I take my foot off the gas and push in the clutch. I had this problem before sort of but not this bad.

    Any ideas?
    Thanks!

    EDIT: A bent valve wouldn't be a possibility would it? I had a valve job but the guy told me not to lie it down on the head surface because the valves were sticking up. The guy who worked on my car had to work on the cams and I'm worried he might not have been very careful, although I would trust him for most anything.
    Last edited by streetwaves; 06-10-2010, 09:04 PM.

    Current: 1990 325iS | Past: 1991 318iS

    #2
    Vacuum leak
    Originally posted by Gruelius
    and i do not know what bugg brakes are.

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      #3
      Had a similar problem on my car... try swapping the spark plugs!
      Originally posted by Dozyproductions
      All girls fuck but not all girls fuck around with combustion engines.

      Comment


        #4
        Originally posted by KenC View Post
        Vacuum leak
        These cars are so picky on vacuum leaks it isn't even funny!!

        That in mind, make sure that everything sealing the engine is doing just that. If your valve cover, oil dip stick tube, etc. isn't sealing properly it will cause a slight air leak. Since you had a few things apart it's worth double checking torque settings on everything you had off.
        sigpic

        1991 318i Sedan Project

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